On 5/14/21 5:14 PM, Adrian Moreno wrote:
> 
> 
> On 5/14/21 4:34 PM, Ilya Maximets wrote:
>> On 5/7/21 3:02 PM, Adrian Moreno wrote:
>>> Apart from a cut-and-paste typo, the man page claims that mpls_labels
>>> can be provided in hexadecimal format but that's currently not the case.
>>>
>>> Fix ofctl formatting as well as a few missing spaces in the manpage
>>>
>>> Signed-off-by: Adrian Moreno <[email protected]>
>>> ---
>>>  lib/ofp-actions.c  | 10 ++++++++--
>>>  tests/ovs-ofctl.at | 22 ++++++++++++++++++++++
>>>  2 files changed, 30 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/lib/ofp-actions.c b/lib/ofp-actions.c
>>> index 0342a228b..610ccca04 100644
>>> --- a/lib/ofp-actions.c
>>> +++ b/lib/ofp-actions.c
>>> @@ -3775,13 +3775,19 @@ encode_SET_MPLS_LABEL(const struct 
>>> ofpact_mpls_label *label,
>>>  static char * OVS_WARN_UNUSED_RESULT
>>>  parse_SET_MPLS_LABEL(char *arg, const struct ofpact_parse_params *pp)
>>>  {
>>> +    char* error;
>>> +    uint32_t label;
>>
>> It's better to reverse order of these and move below the definition
>> of 'mpls_label' or right to the point of usage.
> 
> Sure
> 
>>
>>>      struct ofpact_mpls_label *mpls_label
>>>          = ofpact_put_SET_MPLS_LABEL(pp->ofpacts);
>>>      if (*arg == '\0') {
>>>          return xstrdup("set_mpls_label: expected label.");
>>>      }
>>>  
>>> -    mpls_label->label = htonl(atoi(arg));
>>> +    error = str_to_u32(arg, &label);
>>> +    if (error) {
>>> +        return error;
>>> +    }
>>> +    mpls_label->label = htonl(label);
>>>      return NULL;
>>>  }
>>>  
>>> @@ -3850,7 +3856,7 @@ static void
>>>  format_SET_MPLS_TC(const struct ofpact_mpls_tc *a,
>>>                     const struct ofpact_format_params *fp)
>>>  {
>>> -    ds_put_format(fp->s, "%sset_mpls_ttl(%s%"PRIu8"%s)%s",
>>> +    ds_put_format(fp->s, "%sset_mpls_tc(%s%"PRIu8"%s)%s",
>>>                    colors.paren, colors.end, a->tc,
>>>                    colors.paren, colors.end);
>>>  }
>>> diff --git a/tests/ovs-ofctl.at b/tests/ovs-ofctl.at
>>> index 5ddca67e7..010eac8f1 100644
>>> --- a/tests/ovs-ofctl.at
>>> +++ b/tests/ovs-ofctl.at
>>> @@ -588,6 +588,28 @@ NXT_FLOW_MOD: ADD ip 
>>> actions=ct(commit,exec(load:0x1->NXM_NX_CT_LABEL[[0..63]],l
>>>  ])
>>>  AT_CLEANUP
>>>  
>>> +AT_SETUP([ovs-ofctl -F nxm parse-flows mpls actions])
>>> +AT_DATA([flows.txt], [
>>> +# comment
>>> +actions=set_mpls_label(10)
>>> +actions=set_mpls_label(0x10)
>>> +actions=set_mpls_tc(4)
>>> +actions=set_mpls_ttl(200)
>>> +])
>>> +AT_CHECK([ovs-ofctl -F nxm parse-flows flows.txt], [0], [stdout])
>>> +# The substitution for fec0:0: is because some libcs (e.g. MUSL)
>>> +# abbreviate a single zero and others (e.g. glibc) don't.
>>> +AT_CHECK([[sed 's/ (xid=0x[0-9a-fA-F]*)//
>>> +s/fec0:0:/fec0::/g' stdout]], [0], [dnl
>>> +usable protocols: OpenFlow10,NXM
>>> +chosen protocol: NXM-table_id
>>> +NXT_FLOW_MOD: ADD actions=set_mpls_label(10)
>>> +NXT_FLOW_MOD: ADD actions=set_mpls_label(16)
>>> +NXT_FLOW_MOD: ADD actions=set_mpls_tc(4)
>>> +NXT_FLOW_MOD: ADD actions=set_mpls_ttl(200)
>>
>> It's probably better to add these checks to existing tests, e.g.
>> 'ovs-ofctl parse-flows (NXM)'.  It might also make sense to use
>> larger values to test the type size.
> 
> I did not find other test that only has:
>> "usable protocols: OpenFlow10,NXM"
> so I wanted to avoid changing the usable protocols of existing tests.

'OXM,NXM' is wider than 'OpenFlow10,NXM' so tests with usable protocols
'OXM,NXM'+ will not be changed by adding these new test cases.

> 
>>
>>> +])
>>> +AT_CLEANUP
>>> +
>>>  AT_SETUP([ovs-ofctl -F nxm -mmm parse-flows])
>>>  AT_DATA([flows.txt], [[
>>>  # comment
>>>
>>
> 

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